A star that is extremely hot but not very bright.
What is a white dwarf?
How bright a star looks in the night sky.
What is Apparent Visual Magnitude (AVm).
The first step of all stars' life cycles, sometime referred to as a 'stellar nursery.'
What is a stellar nebula?
The horizontal axis on the HR diagram.
What is temperature?
A sort of intermediate step between a star and a planet.
What is a brown dwarf?
The kind of main sequence star that has the longest life span.
How bright a star would appear to be at 10 parsecs.
What is Absolute Visual Magnitude (AVM)?
Neutron stars are usually the last stage of life for this kind of star.
Large stars.
The vertical axis on the HR diagram.
What is luminosity or brightness?
The place on the HR diagram where a normal star spends most of its life.
What is the main sequence?
The element being used as fuel in a red giant.
What is helium?
The formula for the distance modulus.
What is M-m?
A particularly massive star might turn into one of these.
What is a black hole?
The line along which most stars lie.
What is the main sequence?
The AVm of the Sun.
What is -26.7?
Large stars on the main sequence are usually this color.
The more negative magnitude when a star is more than 10 parsecs away.
What is Absolute?
The death of a large star is sometimes called this.
What is a nova or supernova?
The location of very bright stars on the HR diagram.
What is the top?
The way that scientists figure out a star's composition.
What is spectroscopy?
What is at least ten times greater?
The more negative magnitude when a star is less than 10 parsecs away.
What is Apparent.
The death of an average star sometimes results in this.
What is a planetary nebula?
The location of very hot stars on the HR diagram.
What is the left?
A type of star that pulsates, changing temperature, luminosity, and size, at a highly regular rate.
What is a Cepheid Variable?